The use of platinum microelectrodes for electrochemical investigations in low temperature glasses of non-aqueous solvents

Platinum microelectrodes of radius less than 1μm enable steady state voltammetric measurements to be made using a two electrode configuration at temperatures down to the freezing point of the solvent (eutectic mixtures) in solvents such as acetonitrile and acetone. At lower temperatures, where the "glass" phase is formed, voltammetric measurements can still be made. Very low ohmic iR drop associated with the use of platinum microelectrodes of such small radius make measurements possible in these very high resistance media. Data are presented for oxidation of ferrocene.